FIND THE LCM AND HCF OF 80,124 AND 144 BY PRIME FACTORISATION
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80 = 2⁴ × 5
124 = 2² × 31
144 = 2⁴ × 3²
LCM = product of prime factors with highest power
==> LCM = 2⁴ × 3² × 31 × 5
==> LCM = 16 × 9 × 31 × 5
==> LCM = 45 × 16 × 31
==> LCM = 22320
HCF = product of common terms with lowest power
==> HCF = 2²
==> HCF = 4
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